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Semtech Corporation UCLAMP0551Y.TFT
- Part No.:
- UCLAMP0551Y.TFT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 2-XFDFN
- Datasheet:
-
UCLAMP0551Y.TFT.pdf
- Description:
- TVS DIODE 5VWM 12VC 0201
- Quantity:
- Payment:
- Shipping:
Inventory:5,804
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Product details
Overview
UCLAMP0551Y.TFT from Semtech is a single-line ESD protection diode in a 2-pin SLP0603P2X3E package (0.6 × 0.3 × 0.25 mm), rated for ±5 V working voltage, 6.9 pF junction capacitance at 0 V, 0.37 Ω typical dynamic resistance, and ±20 kV IEC 61000-4-2 contact ESD withstand. It protects high-speed digital lines in portable electronics such as smartphone side keys and audio ports.
For engineers reviewing the UCLAMP0551Y.TFT datasheet, pinout, applications, or equivalent options, key selection criteria include low clamping voltage (11 V at 2.5 A), ultra-low capacitance for signal integrity, robust ESD strike endurance (>1000 cycles), and compatibility with 0201-footprint layouts.
Technical Context
The UCLAMP0551Y.TFT uses silicon-avalanche TVS technology optimized for board-level ESD suppression on single-ended data/power lines. Its bidirectional structure provides symmetrical clamping for ±8 kV to ±20 kV IEC 61000-4-2 transients without polarity dependence.
Designed as a direct replacement for 0201 MLVs, it delivers lower dynamic resistance (0.37 Ω) and tighter clamping (11 V at 2.5 A) than comparable varistors, while maintaining sub-7 pF capacitance-critical for USB 2.0, I²C, and audio interface protection where signal loading must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | ±5 V - matches standard 5 V logic and interface rails without derating |
| ESD Withstand | ±20 kV contact per IEC 61000-4-2 - exceeds Level 4 immunity requirements |
| Clamping Voltage | 11 V at 2.5 A peak pulse - limits transient overvoltage to safe levels for downstream ICs |
| Junction Capacitance | 6.9 pF at 0 V - preserves signal integrity on high-speed lines up to ~1.8 GHz |
| Dynamic Resistance | 0.37 Ω typical - enables fast, low-loss energy diversion during ESD events |
| Leakage Current | <3 nA at 5 V reverse - negligible power loss and no impact on bias networks |
| Package | SLP0603P2X3E (0.6 × 0.3 mm) - footprint-compatible with 0201, enabling drop-in layout reuse |
Pinout & Package
UCLAMP0551Y.TFT is housed in a 2-pin SLP0603P2X3E package (0.6 mm × 0.3 mm × 0.25 mm nominal), with NiAu lead finish and tape-and-reel packaging (TFT suffix). The device is electrically symmetrical-both terminals serve identical roles in bidirectional ESD clamping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode/Cathode (symmetrical) | Either terminal connects to protected line; no polarity assignment required |
| Pin 2 | Anode/Cathode (symmetrical) | Other terminal connects to system ground or return path; bidirectional conduction |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 6.9 pF enables use on USB 2.0, I²C, and audio jack lines without signal degradation |
| High ESD endurance | Withstands >1000 IEC 61000-4-2 Level 4 strikes - supports long-term field reliability |
| Bidirectional clamping | ±20 kV symmetric protection eliminates need for polarity-aware layout or orientation checks |
| 0201-compatible footprint | SLP0603P2X3E package fits existing 0201 land patterns - no PCB redesign needed |
| Pb-free & RoHS compliant | NiAu termination and halogen-free construction meet global environmental compliance mandates |
Applications
| Smartphone Side Keys | USB 2.0 Data Lines |
|---|---|
Use Scenario: ESD protection for mechanical side buttons exposed to frequent human contact in handheld devices. IC Role / Device Role: Bidirectional TVS diode placed between key switch node and baseband processor GPIO. Use Value: Prevents latch-up or damage from ±20 kV contact discharges while adding only 6.9 pF loading to maintain debounce timing accuracy. | Use Scenario: Transient suppression on D+ and D− lines of USB 2.0 interfaces in tablets and accessories. IC Role / Device Role: Low-capacitance ESD clamp installed adjacent to connector to shunt surges before reaching PHY. Use Value: Maintains signal integrity up to 480 Mbps with <11 V clamping at 2.5 A, avoiding eye diagram closure or bit errors. |
| Audio Jack Contacts | Portable Instrumentation I/O |
Use Scenario: Protection of 3.5 mm TRRS jack tip/ring contacts against repeated plug insertion/removal ESD. IC Role / Device Role: Single-line μClamp placed inline on each audio channel path (L/R/mic/GND). Use Value: Sub-7 pF capacitance prevents high-frequency attenuation in audio band; ±20 kV rating covers worst-case user discharge. | Use Scenario: Input/output line protection in handheld test meters and sensor nodes with exposed connectors. IC Role / Device Role: Discrete ESD suppressor on analog sensor inputs, digital control lines, and power rails. Use Value: 0.37 Ω dynamic resistance ensures rapid clamping response (<1 ns), preserving measurement accuracy during transient events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD1E05U06DPYR | 6.5 pF capacitance, 12 V clamping at 2.5 A, same SLP0603P2X3E package | Slightly higher clamping voltage; optimized for TI ecosystem reference designs | Preferred when using TI microcontrollers with integrated ESD-hardened IO |
| SZ1.8SMCG-TP | 1.8 V working voltage, 15 pF capacitance, larger SOD-523 package | Lower voltage rating limits use to sub-2 V rails; higher capacitance restricts high-speed use | Only suitable for low-voltage, low-frequency analog sensing-not a direct functional substitute |
Compared with TPD1E05U06DPYR and SZ1.8SMCG-TP, the UCLAMP0551Y.TFT offers the best balance of low clamping (11 V), ultra-low capacitance (6.9 pF), and 5 V compatibility in the smallest footprint-making it optimal for space-constrained, high-speed portable interfaces.
Availability
UCLAMP0551Y.TFT is available at Aetrix Electronics and suitable for smartphone side keys, USB 2.0 data lines, and audio jack contacts requiring stable component supply across high-volume consumer electronics production.
Supply support for UCLAMP0551Y.TFT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Semtech Corporation is a U.S.-based semiconductor company specializing in high-performance analog and mixed-signal semiconductors for power management, protection, and signal integrity.
The μClamp® product line was designed specifically for ultra-compact, high-reliability ESD protection in portable consumer electronics-prioritizing minimal capacitance, fast response, and robust multi-strike endurance in sub-0201 packages.
FAQ
What is the maximum working voltage rating for UCLAMP0551Y.TFT?
The UCLAMP0551Y.TFT has a maximum working voltage of ±5 V DC. This rating means the device can continuously block up to 5 V in either polarity without leakage exceeding 3 nA, making it suitable for protecting 5 V logic lines, USB data paths, and other standard interface rails. Exceeding this voltage risks premature breakdown or accelerated aging.
Does UCLAMP0551Y.TFT require orientation during PCB placement?
No, UCLAMP0551Y.TFT does not require specific orientation during placement because it is electrically symmetrical-both pins function identically as bidirectional ESD clamping terminals. The device's SLP0603P2X3E package has no polarity marking, and its datasheet confirms symmetrical performance for ±8 kV and ±20 kV IEC 61000-4-2 events. This simplifies assembly and eliminates orientation-related solder defects.
How many ESD strikes can UCLAMP0551Y.TFT withstand before degradation?
UCLAMP0551Y.TFT is rated to withstand over 1000 ESD strikes at IEC 61000-4-2 Level 4 (±8 kV contact). This endurance is verified through standardized testing and reflects real-world reliability in portable devices subject to repeated handling. Performance remains within specification-including clamping voltage and leakage-throughout this cycle count, supporting multi-year product lifetimes in consumer applications.
What is the junction capacitance of UCLAMP0551Y.TFT at 1 MHz and 0 V bias?
The junction capacitance of UCLAMP0551Y.TFT is 6.9 pF typical at 1 MHz and 0 V reverse bias. This value is measured under standardized conditions and directly impacts high-frequency signal integrity-enabling reliable operation on USB 2.0, I²C, and audio lines without measurable rise-time degradation or insertion loss beyond –2.3 dB at 900 MHz, as confirmed in the manufacturer's S21 characterization data.
Is UCLAMP0551Y.TFT compatible with standard 0201 reflow profiles?
Yes, UCLAMP0551Y.TFT is compatible with standard lead-free reflow profiles used for 0201 components. Semtech provides detailed assembly guidelines-including recommended stencil aperture dimensions (0.220 × 0.320 mm), solder paste type (Type 3 or finer), and peak temperature limits (≤260 °C)-to ensure reliable solder joints. Its NiAu termination and thermal design support full JEDEC J-STD-020 compliance without tombstoning or voiding.
UCLAMP0551Y.TFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 2-XFDFN
- Series:
- uClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 2.5A (8/20µs)
- Power - Peak Pulse:
- 30W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP0603P2X3E
UCLAMP0551Y.TFT FAQ
1.How can I place an order for UCLAMP0551Y.TFT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP0551Y.TFT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for UCLAMP0551Y.TFT reliable?
The price and inventory of UCLAMP0551Y.TFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP0551Y.TFT is usually 5 days.
3.What payment methods are accepted for UCLAMP0551Y.TFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP0551Y.TFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP0551Y.TFT?
UCLAMP0551Y.TFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP0551Y.TFT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for UCLAMP0551Y.TFT?
For technical support, including UCLAMP0551Y.TFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP0551Y.TFT requirements.
6.How does Aetrix verify that UCLAMP0551Y.TFT is sourced from the original manufacturer or authorized distributors?
All UCLAMP0551Y.TFT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that UCLAMP0551Y.TFT meets industry standards.
7.What is the process for return or replacement of UCLAMP0551Y.TFT?
All UCLAMP0551Y.TFT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP0551Y.TFT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The UCLAMP0551Y.TFT part is unused and in its original packaging.
Return procedure for UCLAMP0551Y.TFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP0551Y.TFT Tags
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